Sol–gel synthesis and characterization of sub-microsized lanthanide (Ho, Tm, Yb, Lu) aluminium garnets

Mineralogical characterization of pre-hispanic pottery at the Mesa de Los Santos region, Colombia

“…According to the FTIR analysis of the archeological artifacts, there is not a great variation on mineralogy, which reveal that the analyzed pottery shreds can represent products manufactured from raw materials from a similar origin. The absorption bands at 3420-3431 cm -1 can be attributed to the OH stretching vibration of H 2 O adsorbed on the surface of pottery and the bending H-O-H vibration (δ) of water due to the exposure of the powders to atmosphere, respectively, as reported by Dubnikova et al (2011). The absorption bands at 3420-3436 cm -1 (stretching vibration of -OH) can be attributed to quartz or calcite.…”

Thermal properties of a prospective thermal barrier material: Yb3Al5O12

“…15 Hence, Yb 3 Al 5 O 12 is considered as a prospective TBC material. Previous works are mainly focused on the preparation of Yb 3 Al 5 O 12 using various approaches such as sol-gel method, 16 coprecipitation method, 17 micro-pulling-down technique, 18 and RF-heating Czochralski method. 19 However, the fundamental mechanical and thermal properties of Yb 3 Al 5 O 12 are seldom reported to the best of our knowledge.…”

Sol–gel derived Tb3Fe5O12 and Y3Fe5O12 garnets: Synthesis, phase purity, micro-structure and improved design of morphology

“…Individual particles seem to be submicro-sized (~500 nm) spherical crystallites and they partially fused to form hard agglomerates [39,40]. The YIG sample, prepared at lower temperature has slightly smaller particles all over with more porous structure.…”